package com.gl.common.util;

import com.gl.common.exception.CustomException;
import com.gl.framework.security.LoginUser;
import com.gl.framework.web.response.ResultCode;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;

/**
 * 安全服务工具类
 */
public class SecurityUtils {
    private static final Logger log = LoggerFactory.getLogger(SecurityUtils.class);

    /**
     * 系统超级管理员ID
     */
    public static final long ADMIN_ID = 1L;

    /**
     * 获取用户账号
     **/
    public static String getLoginName() {
        try {
            return getLoginUser().getUsername();
        } catch (Exception e) {
            log.error(e.getMessage(), e);
            throw new CustomException("获取用户账号异常", ResultCode.UNAUTHORIZED.getCode());
        }
    }

    /**
     * 获取用户
     **/
    public static LoginUser getLoginUser() {
        try {
            return (LoginUser) getAuthentication().getPrincipal();
        } catch (Exception e) {
            log.error(e.getMessage(), e);
            throw new CustomException("获取用户信息异常", ResultCode.UNAUTHORIZED.getCode());
        }
    }

    public static Long getLoginUserId() {
        LoginUser user = getLoginUser();
        return user.getUser().getId();
    }

    /**
     * 获取Authentication
     */
    public static Authentication getAuthentication() {
        return SecurityContextHolder.getContext().getAuthentication();
    }

    /**
     * 生成BCryptPasswordEncoder密码
     *
     * @param password 密码
     * @return 加密字符串
     */
    public static String encryptPassword(String password) {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.encode(password);
    }

    /**
     * 判断密码是否相同
     *
     * @param rawPassword     真实密码
     * @param encodedPassword 加密后字符
     * @return 结果
     */
    public static boolean matchesPassword(String rawPassword, String encodedPassword) {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.matches(rawPassword, encodedPassword);
    }

    /**
     * 是否为系统超级管理员
     *
     * @param userId 用户ID
     * @return 结果
     */
    public static boolean isAdmin(Long userId) {
        return userId != null && ADMIN_ID == userId;
    }
}
